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Berlin 2024 – wissenschaftliches Programm

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 8: Quantum Field Theory II

MP 8.3: Vortrag

Mittwoch, 20. März 2024, 10:20–10:40, HL 001

On separable states in relativistic QFT — •Ko Sanders — Friedrich-Alexander Universität Erlangen-Nürnberg

In quantum theory, entanglement is the rule rather than the exception: systems naturally entangle themselves with their environment at no cost to the experimenter. On the contrary, to prevent this decoherence is difficult and expensive in terms of effort and energy. In this talk I will discuss a recent quantitative result on the amount of energy needed to ensure the existence of separable (i.e. non-entangled) states in relativistic quantum field theory, which are physically perfectly reasonable (quasi-free, Hadamard, highly symmetric). This result can be seen as a first step in a general investigation of the balance between energy and entanglement in relativistic QFT.

Keywords: entanglement; energy; separable; QFT

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